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Peterbilt 379 Frame Crossmembers & Covers

  • Product
  • Qty in Cart
  • Quantity
  • Price
  • Subtotal
  • Cap Screw 1/2in-20 X 2-1/2 Inch Grade 8

    Cap Screw 1/2in-20 X 2-1/2 Inch Grade 8

    AUTOMANN USA

    $2.29
    Grade 8 Hex Bolt Replaces 2700279010 And 1735301* High Quality Cap Screw* 2-1/2 Inch Length * 1/2 Inch -20 Threads* Grade- 8* Spring* Fine Pitch* Bolt Type- Hex Bolt* Sold Individually* Warranty On...
    29-05250000
    SKU:
    29-05250000
    Length Options:
    2 1/2 Inch
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $2.29
    Qty in Cart: 0
    Price:
    $2.29
    Subtotal:
  • BESTfit Mounting Hardware Accessories - 145089-200,145089200 For Shock Absorber

    BESTfit Mounting Hardware Accessories - 145089-200,145089200 For Shock Absorber

    BESTFIT TRUCK PARTS

    $15.85
    BESTfit Shock and Strut ComponentsThis accessory kit assists with installation of a Gas Shock Absorber. It replaces part numbers 145089-200 and 145089200.* High Quality Mounting Accessory* Sold...
    29-05100051
    SKU:
    29-05100051
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $15.85
    Qty in Cart: 0
    Price:
    $15.85
    Subtotal:
  • U-Bolt Kit 3/4 X 6.375 X 10 Inch Grade 8 - Specialty Bend - 48718-126

    U-Bolt Kit 3/4 X 6.375 X 10 Inch Grade 8 - Specialty Bend - 48718-126

    AFTERMARKET

    $61.99
    3/4 Inch OD U-Bolt Kit, 6.375 Inch Wide, 10 Inch Long* High Quality U-Bolt Kit* Kit Includes:  - (2) U Bolts (Semi-Round Bend)* Dimensions:  - 10.00 Inch Length  - 3.125 Inch Of 3/4 Inch - 16 Thread ...
    29-05100050
    SKU:
    29-05100050
    Material Options:
    Steel
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    Width Options:
    6 Inch
    Length Options:
    10 Inch
    Make:
    Trailer
    $61.99
    Qty in Cart: 0
    Price:
    $61.99
    Subtotal:
  • Nylon Brake Camshaft Bushing 1.50 ID X 1.85 OD X 1.70 Inch

    Nylon Brake Camshaft Bushing 1.50 ID X 1.85 OD X 1.70 Inch

    AUTOMANN USA

    $5.08
    Nylon Brake Camshaft Bushing Replaces E2551, 1225X804, And 28-1260* High Quality Camshaft Bushing * Nylon* Dimensions: - 1.50 Inch ID  - 1.85 Inch OD  - 1.70 Inch Length* Early Meritor Trailer Axle*...
    29-05170002
    SKU:
    29-05170002
    Material Options:
    Plastic/Poly
    Truck Class:
    Heavy Duty
    Diameter Options:
    1 1/2 Inch
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $5.08
    Qty in Cart: 0
    Price:
    $5.08
    Subtotal:
  • Front Axle Cup Adapter 0.807 ID X 2 Inch - 90001349 For AD130 Series W/ Thru Bolt Connection

    Front Axle Cup Adapter 0.807 ID X 2 Inch - 90001349 For AD130 Series W/ Thru Bolt Connection

    AFTERMARKET

    $100.99
    Front Axle Cup Adapter Replaces 90001349* High Quality Adapter* AD130 Series With Axle Thru Bolt Connection* Dimensions:  - 2.00 Inch Overall Height  - 0.807 Inch Diameter Bolt Hole  - 2.50 Inch...
    29-05100057
    SKU:
    29-05100057
    Truck Class:
    Universal
    Material Options:
    Plastic/Poly
    Diameter Options:
    7/8 Inch
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    Height Options:
    2 Inch
    $100.99
    Qty in Cart: 0
    Price:
    $100.99
    Subtotal:
  • U-Bolt Kit 3/4 X 6.375 X 9 Inch Grade 8 - Specialty Bend - 48718108

    U-Bolt Kit 3/4 X 6.375 X 9 Inch Grade 8 - Specialty Bend - 48718108

    AFTERMARKET

    $54.99
    3/4 Inch OD U-Bolt Kit, 6.375 Inch Wide, 9.00 Inch Long* High Quality U-Bolt Kit* Kit Includes:  - (2) U Bolts (Semi-Round Bend)* Dimensions:  - 9.00 Inch Length  - 3.125 Inch Of 3/4 Inch - 16...
    29-05100049
    SKU:
    29-05100049
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    Length Options:
    9 Inch
    Width Options:
    6 Inch
    Make:
    Trailer
    $54.99
    Qty in Cart: 0
    Price:
    $54.99
    Subtotal:
  • Semi Round U- Bolt Kit 3/4in-16 X 4 X 12-1/4 Inch Grade 8 Replaces 3668117C For International, Peterbilt

    Semi Round U- Bolt Kit 3/4in-16 X 4 X 12-1/4 Inch Grade 8 Replaces 3668117C For International, Peterbilt

    AFTERMARKET

    $41.88
    Grade 8 - 3/4 Inch Diameter Semi-Round Bend U Bolt KitRestore proper suspension clamping on your truck with the Semi Round U-Bolt Kit for International and Peterbilt models. Featuring two 12.25-inch...
    29-05090032
    SKU:
    29-05090032
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Make:
    Peterbilt
    Make:
    International
    Product Type:
    Frame & Chassis
    $41.88
    Qty in Cart: 0
    Price:
    $41.88
    Subtotal:
  • BESTfit Semi Round U Bolt Kit 3/4in-16 x 4.0in x 8-1/4 Inch Grade 8 Replaces 15983091 For Chevrolet, GM, Peterbilt

    BESTfit Semi Round U Bolt Kit 3/4in-16 x 4.0in x 8-1/4 Inch Grade 8 Replaces 15983091 For Chevrolet, GM, Peterbilt

    BESTFIT TRUCK PARTS

    $37.14
    BESTfit Semi-Round Bend 3/4 Diameter U Bolt KitKeep your Chevrolet, GM, or Peterbilt truck suspension secure with the BESTfit Semi Round U Bolt Kit 3/4in-16 x 4.0in x 8-1/4 Inch Grade 8. This...
    29-05090033
    SKU:
    29-05090033
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Make:
    GMC
    Make:
    Chevrolet
    Make:
    Peterbilt
    Product Type:
    Frame & Chassis
    Ready To Ship:
    Yes
    $37.14
    Qty in Cart: 0
    Price:
    $37.14
    Subtotal:
  • Tie Rod End 5.75 Inch 1-1/4 OD Passenger Side - 969056R9, 10QH248P4

    Tie Rod End 5.75 Inch 1-1/4 OD Passenger Side - 969056R9, 10QH248P4

    AFTERMARKET

    $51.99
    5.75 Inch Tie Rod End W/ 1-1/4 Inch Rod OD* High Quality Tie Rod End* Dimensions: - 1-1/4 Inch Rod OD - 5.75 Inch Center To End - 2.638 Inch Height Of Taper - 7/8 Inch- 14 Stud Thread* Thread Pitch...
    29-05090025
    SKU:
    29-05090025
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $51.99
    Qty in Cart: 0
    Price:
    $51.99
    Subtotal:
  • Self Steer Axle Tie Rod End 5.375 -02-205-0003-00

    Self Steer Axle Tie Rod End 5.375 -02-205-0003-00

    AFTERMARKET

    $98.99
    5.375 Inch Center To End Self Steer Axle Tie Rod End* High Quality Tie Rod End* Dimensions: - 5.375 Inch Center To End - 3.25 Inch Height Of Taper* Self Steer Axle* Made In USA* Sold Individually*...
    29-05090027
    SKU:
    29-05090027
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $98.99
    Qty in Cart: 0
    Price:
    $98.99
    Subtotal:
  • Tie Rod End Type-5, 10.50 Inch 1-5/8 OD Driver Side- A3144M533, R230074

    Tie Rod End Type-5, 10.50 Inch 1-5/8 OD Driver Side- A3144M533, R230074

    AFTERMARKET

    $275.99
    10.50 Inch Center To End Tie Rod End W/ 4.331 Inch Drop* High Quality Tie Rod End* 1-5/8 Inch Rod OD* 10.50 Inch Center To End* 2.634 Inch Height Of Taper* Taper Minor Diameter- 0.967 Inch* Taper...
    29-05090024
    SKU:
    29-05090024
    Material Options:
    Steel
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $275.99
    Qty in Cart: 0
    Price:
    $275.99
    Subtotal:
  • Tie Rod End 5.75 Inch 1-1/4 OD Passenger Side - 2452861

    Tie Rod End 5.75 Inch 1-1/4 OD Passenger Side - 2452861

    AFTERMARKET

    $51.99
    5.75 Inch Center To End Tie Rod End W/ 1-1/4 Inch Rod OD* High Quality Tie Rod End* Dimensions: - 1-1/4 Inch Rod OD - 5.75 Inch Center To End - 2.638 Inch Height Of Taper - 7/8 Inch- 14 Stud Thread*...
    29-05090026
    SKU:
    29-05090026
    Material Options:
    Steel
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $51.99
    Qty in Cart: 0
    Price:
    $51.99
    Subtotal:
  • Cross Tube M38-1.5 ID X 2.281 OD X 52.75 Inch - 03357021100Z For Neway

    Cross Tube M38-1.5 ID X 2.281 OD X 52.75 Inch - 03357021100Z For Neway

    AFTERMARKET

    $219.99
    52.50 Inch Cross Tube - Double Bolted Clamps B.E.s* High Quality Cross Tube* Dimensions: - 52.75 Inch Length  - 2.281 Inch OD  - M38-1.5 ID* Double Bolted Clamps B.E.S.* Made In USA* Sold...
    29-05090021
    SKU:
    29-05090021
    Length Options:
    52 3/4 Inch
    Material Options:
    Steel
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $219.99
    Qty in Cart: 0
    Price:
    $219.99
    Subtotal:
  • Cross Tube M38-1.5 ID X 2.281 OD X 57.281 Inch - 03357021300Z For Neway

    Cross Tube M38-1.5 ID X 2.281 OD X 57.281 Inch - 03357021300Z For Neway

    AFTERMARKET

    $240.99
    57.281 Cross Tube - Double Bolted Clamps B.E.S.* High Quality Cross Tube* Dimensions: - 57.281 Inch Length  - 2.281 Inch OD  - M38-1.5 ID* Double Bolted Clamps B.E.S.* Made In USA* Sold Individually*...
    29-05090022
    SKU:
    29-05090022
    Length Options:
    57 Inch
    Material Options:
    Steel
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $240.99
    Qty in Cart: 0
    Price:
    $240.99
    Subtotal:
  • Tie Rod End Type-5, 10.50 Inch 1-5/8 OD Passenger Side - A23144M273

    Tie Rod End Type-5, 10.50 Inch 1-5/8 OD Passenger Side - A23144M273

    AFTERMARKET

    $275.99
    10.50 Inch Center To End Tie Rod End W/ 4.331 Inch Drop* High Quality Tie Rod End* 1-5/8 Inch Rod OD* 10.50 Inch Center To End* 2.634 Inch Height Of Taper* Taper Minor Diameter- 0.967 Inch* Taper...
    29-05090023
    SKU:
    29-05090023
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $275.99
    Qty in Cart: 0
    Price:
    $275.99
    Subtotal:
  • Passenger Side Tie Rod End 5.50 Inch W/ 1-1/8 OD Replaces L20Sv8103C13

    Passenger Side Tie Rod End 5.50 Inch W/ 1-1/8 OD Replaces L20Sv8103C13

    AFTERMARKET

    $94.99
    Passenger Side Tie Rod EndOptimize your truck's steering performance with this Passenger Side 5.50 Inch Tie Rod End. Measuring 1-1/8-inch rod OD, 5.50-inch center-to-end, and 1.929-inch taper height...
    29-05090013
    SKU:
    29-05090013
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $94.99
    Qty in Cart: 0
    Price:
    $94.99
    Subtotal:
  • Driver Side 5.50 Inch Tie Rod End 1-1/8 OD Replaces L20Sv8102C13

    Driver Side 5.50 Inch Tie Rod End 1-1/8 OD Replaces L20Sv8102C13

    AFTERMARKET

    $94.99
    Driver Side Tie Rod EndEnsure dependable truck steering with this Driver Side 5.50 Inch Tie Rod End. Featuring a 1-1/8-inch rod OD, 5.50-inch center-to-end length, and taper height of 1.929 inches...
    29-05090014
    SKU:
    29-05090014
    Material Options:
    Steel
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $94.99
    Qty in Cart: 0
    Price:
    $94.99
    Subtotal:
  • BESTfit Square U Bolt Kit 3/4 In-16 x 4 In x 4-5/8 Inch Grade 8

    BESTfit Square U Bolt Kit 3/4 In-16 x 4 In x 4-5/8 Inch Grade 8

    BESTFIT TRUCK PARTS

    $44.96
    BESTfit 3/4 Inch Diameter Squared Top U Bolt Kit* High Quality U-Bolt Kit* Kit Includes:  - (2) U Bolts (Square Bend)* Dimensions:  - 4.625 Inch Length  - 2.0 Inch Of 3/4 Inch - 16 Thread  - 4.0 Inch...
    29-05090001
    SKU:
    29-05090001
    Material Options:
    Steel
    Truck Class:
    Universal
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $44.96
    Qty in Cart: 0
    Price:
    $44.96
    Subtotal:
  • Cotter Pin 1/4 X 2 Inch - XB5 For Holland

    Cotter Pin 1/4 X 2 Inch - XB5 For Holland

    AUTOMANN USA

    $0.66
    1/4 X 2 Inch Cotter Pin Replaces XB5* High Quality Cotter Pin* 1/4 Inch X 2.0 Inch Length* Sold Individually* Warranty On Cotter Pins Against Defects In Workmanship & Material From Date Of...
    09-05250037
    SKU:
    09-05250037
    Material Options:
    Aluminum
    Length Options:
    2 Inch
    Truck Class:
    Universal
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $0.66
    Qty in Cart: 0
    Price:
    $0.66
    Subtotal:
  • Cotter Pin 1/4 X 3 Inch - E2306, 103426 For Eaton, Fruehauf Axles

    Cotter Pin 1/4 X 3 Inch - E2306, 103426 For Eaton, Fruehauf Axles

    AUTOMANN USA

    $1.47
    1/4 X 3 Inch Cotter Pin* High Quality Cotter Pin* 1/4 Inch X 3.0 Inch Length* Sold Individually* Warranty On Cotter Pins Against Defects In Workmanship & Material From Date Of Purchase*** High...
    09-05170096
    SKU:
    09-05170096
    Truck Class:
    Universal
    Material Options:
    Aluminum
    Length Options:
    3 Inch
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $1.47
    Qty in Cart: 0
    Price:
    $1.47
    Subtotal:
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Discover Peterbilt 379 Rear Crossmember Designs

Reinforce your truck's structural support with Peterbilt 379 Frame Crossmembers & Covers. This lineup of aftermarket products includes high-quality fiberglass and stainless steel rear frame covers, fuel tank filler frames, rear frame covers, replacement cross members, and other essential components to keep your truck's frame in top condition. Handle the demands of commercial hauling with the best-in-class cross members featuring durable, stainless steel materials, corrosion-resistant finishes, and easy installation instructions. If you're looking for improved structural integrity for your frame, secure mounting points, and better load management, invest in quality frame cross members and covers to bolster your Peterbilt 379.

Frequently Asked Questions About Peterbilt 379 Frame Crossmembers & Covers

What are frame crossmembers and covers used for on a Peterbilt 379?

Frame crossmembers are structural components that run horizontally between the frame rails, providing rigidity and support to the chassis. Covers are typically used to shield these crossmembers or nearby frame sections from road debris, moisture, and corrosion while also giving the underside of the truck a cleaner, finished appearance.

Will these crossmembers and covers fit my specific Peterbilt 379 model year?

Peterbilt 379 frames can vary slightly depending on the model year and how the truck was originally configured, so it is important to check listed specifications such as frame rail width, mounting hole patterns, and wheelbase before purchasing. If you are unsure about fitment, reach out to our team with your VIN or frame measurements so we can help confirm compatibility.

What materials are these crossmembers and covers made from, and how do they hold up over time?

Most crossmembers and covers in this category are made from steel or aluminum, depending on the specific part and intended use. Steel components typically offer higher strength for structural applications, while aluminum covers are often chosen for reduced weight and natural corrosion resistance. Finish options may include raw metal, painted, or powder-coated surfaces to help protect against rust and wear from road exposure.

Are these parts a direct bolt-on replacement, or will modifications be needed for installation?

Many crossmembers and covers are designed to bolt into the existing mounting points on the frame, but installation can vary based on the part and whether your truck has had prior frame modifications. We recommend reviewing the product description for specific installation notes and having a qualified technician inspect your frame before installation, especially for structural crossmembers.

Do frame crossmembers affect the structural integrity or warranty of my truck?

Crossmembers play a role in the overall strength and stability of the frame, so it is important to select a part rated for your truck's application and to have it installed correctly. Improper installation or using a part not suited for your frame configuration can affect performance and safety. If your truck is still under any manufacturer or aftermarket warranty, check with the applicable warranty provider before making frame-related changes.

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